moocCattle Production Science课后答案(慕课2023课后作业答案)

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Chapter one Introduction

Unit test

1、课课课Compared with some monogastric animals such as pigs,后答后作 horses and poultry, cattle have higher ( ).
A、digestibility
B、案慕案growth rate
C、业答disease incidence
D、课课课mortality

2、后答后作The案慕案 animals with the highest feed conversion efficiency is （ ）.
A、dairy cow
B、业答beef cattle
C、课课课sheep
D、后答后作pig

3、案慕案At present,业答 ( ) is the first choice for developing dairy cattle all over the world.
A、Holstein
B、课课课Jersey
C、后答后作Guernsey
D、案慕案Brown Swiss

4、Development trend of cattle industry in the world （ ）。
A、Variety diversification of dairy cattle
B、Promotion and application of new technology
C、Miniaturization of beef cattle breeds
D、Cow breeds replace beef breeds

Unit homework

1、What is the development trend of cattle industry in the world？

Chapter two Cattle species and breeds

Unit test

1、Limousin, a large meat variety, originated from ( ).
A、France
B、Netherlands
C、Italy
D、Germany

2、Among the following cattle breeds, those that belong to the dairy meat dual use type are ( ).
A、Holstein
B、simmental
C、Angus
D、charolais

3、The most obvious characteristics of Jersey is ( ).
A、High yield milk
B、High protein rate
C、High milk fat rate
D、High lactose rate

4、The breed without horns is ( ）.
A、Angus
B、Short horn
C、Ayrshire
D、Limousin

5、（ ）cattle are one of the top breeds in China.
A、Xingjiang Brongn
B、Qinchuan
C、Chinese red steppe
D、Charolais

Unit homework

1、What are the differences between Holstein and Jersey in appearance characteristics and production performance?

Chapter three Biological characteristics and physical appearance of cattle

Unit test

1、The nutritional reasons for the low milk fat rate is ( ).
A、High roughage
B、Low roughage
C、High concentrate
D、Low concentrate

2、The esophageal groove starts from the cardia and extends to the ( ) appetite.
A、rumen
B、abomasum
C、reticulum
D、reticulum and omasum

3、From the local view of beef cattle, the most important part related to meat production performance is ( ).
A、Head
B、rump
C、neck
D、abdomen

4、Well developed standard breast, connective tissue about ( ).
A、15-20%
B、20-25%
C、25-30%
D、30-35%

5、From the whole point of view, the body shape of dairy cattle was ( ) from side, front and top. A. Prismatic B. square C. round D. wedge
A、Prismatic
B、square
C、circular
D、wedge

Unit homework

1、What are the conditions for the existence of anaerobic microorganisms in rumen?

Chapter four Productivity of cattle and its evaluation method

Unit test

1、Under good feeding conditions, cattle are prone to accumulate a large amount of ( ) at 24 months old.
A、Protein
B、carbohydrate
C、fat
D、connective tissue

2、The principle of measuring tenderness of beef with tenderness meter is to measure muscle fiber ( ).
A、Viscous resistance
B、shear resistance
C、elastic resistance
D、tensile resistance

3、The important substance for the special flavor of beef is ( ) in beef.
A、Benzoic acid
B、pyruvate
C、fatty acid
D、amino acid

4、Standard milk, also known as milk fat correction milk (FCM), has a milk fat ratio of ( ).
A、4.5%
B、4.0%
C、3.5%
D、3.0%

Unit homework

1、Factors affecting the performance of dairy cattle？

2、Factors affecting the performance of beef cattle？

Chapter five Genetic breeding of cattle

Unit test

1、（ ）which is a method to improve the quality and production performance of cattle through selection, selection and Cultivation in a cattle breed.
A、Hybrid breeding
B、MOET
C、Molecular breeding
D、Breeding of this variety

2、Cross breeding is an effective way to create new varieties through ( ) varities.
A、two
B、three
C、three or more than three
D、two or more than two

Unit homework

1、What are the advantages of using MOET breeding system?

Chapter six

Unit test

1、In modern dairy production, the first mating age of the cow is ( ) months
A、12
B、14
C、16
D、18

2、The pregnancy period is about ( ) days.
A、270
B、280
C、290
D、300

3、The ideal calving interval for a cow is （ ）。
A、half a year
B、one year
C、One and a half years
D、two years

Uint homework

1、Factors affecting the fertility of cattle?

Chapter seven

Unit test

1、The feed with the content of crude fiber above ( ) in dry matter belongs to crude feed.
A、5%
B、10%
C、18%
D、25%

2、Energy feed refers to the feed with crude fiber content less than ( ) in dry matter, crude protein content less than 20%, and digestive energy more than 10.46mj/kg.
A、5%
B、10%
C、18%
D、25%

3、Commonly used feed for cattle includes ( ).
A、feed additive
B、Vitamin feed
C、Protein feed
D、Roughage

4、Mineral feed generally refers to the feed provided ( ) for cattle.
A、salt
B、Calcium source
C、Phosphorus source
D、vitamin

Unit homework

1、How to effectively use local forage resources？

中国大学Cattle Production Science

中国大学Cattle Production Science是指中国大学在畜牧养殖领域开设的Cattle Production Science课程。该课程旨在培养学生对于牛的生产、管理、繁殖、营养等方面的全面掌握，提高学生在畜牧养殖领域的实践能力和创新思维。该课程体系完整，课程内容涵盖了牛的营养代谢、繁殖与育种、疾病预防与治疗、生产与管理等多个方面。

课程设置

中国大学Cattle Production Science课程设置主要包含以下几个方面：

• 牛的生物学与解剖学
• 牛的生理学与代谢
• 牛的繁殖与育种
• 牛的营养与饲养管理
• 牛的疾病预防与治疗
• 牛的生产与管理

课程教学

中国大学Cattle Production Science课程教学主要采用理论课、实验课和实践课相结合的教学模式。理论课主要讲解相关理论知识；实验课通过实验操作，让学生进一步掌握理论知识；实践课通过实践操作，让学生将所学知识应用到实际生产中。

课程特色

中国大学Cattle Production Science课程拥有以下几个特色：

1. 实战性强：课程注重实践操作，让学生掌握实际操作技能。
2. 综合性强：课程内容涵盖了牛的多个方面，学生可以全面掌握牛的相关知识。
3. 创新性强：课程注重培养学生的创新思维，让学生能够在实际工作中发挥创新能力。

课程价值

中国大学Cattle Production Science课程的学习，不仅可以为学生的畜牧养殖事业打下坚实的理论基础，还可以为学生的就业提供多方面的帮助。学生可以在养殖企业、畜牧场、研究机构等单位从事相关工作，也可以从事兽医、营养师等方面的工作。

总结

中国大学Cattle Production Science课程是中国大学在畜牧养殖领域的一项重要教学工作。该课程不仅可以培养学生的实践能力和创新思维，还可以为学生的就业提供多方面的帮助。希望更多的学生加入到畜牧养殖事业中，为我国畜牧业的发展做出更大的贡献。